Combined typewriting and computing machine



June 2, 1931. A. G. KuPETz COMBINED TYPEWRITING AND COMPUTING MACHINE Filed oct.. i0. 1924 'zsheets-sneez 1 u. a wvb M Jne 2, 1931. A. G. KuPE-'rz COMBINED TYPEWRITING AND COMPUTING MACHINE 2 Sheets-Sheerl 2 Filed Oct. l0, 1924 Affe/i737 Patented June 2, 1931 UNITED STATES PATENT OFFICE ADOL'H G. KUPETZ, 0F NEW ROCHELLE, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO ELLIOTT-FISHER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE COMBINED TYPEWRITING AND COMPUTING MACHINE Application led October 10, 1924.

Serial No. 742,735.

This invention relates to an improvement while the tabulator-key is held depressed in the operation of the tabulating keys for the typewriter carriage in combined typewriting and computing machines ofthe Underwood-Hanson t e, and is an improvement on the devices of william L. Gumpreehts Patent No. 1,268,565, dated June 4, 1918, and Frederick A. Harts Patent No. 1,325,469, dated December 16, 1919.

The numbers to be computed are accumulated by setting up individuals of a nest of pins by a method of cross-selection to correspond with the particular denominational columns in which they are typed.

The numbers thus accumulated are run up by the actuation of a general operator which l drives all of the pin-bearing members distances corresponding to the particular pins set up thereon, so .as to transfer the numbers to associated dial or computing wheels forming a register.

In tabulating, or positioning the carriage at the correct denominational position for the writing of a number, it has been necessary to cause the tabulator-key to release certain silencing cams or rolls of the adding mechanism. This has been done in the manner illustrated in the Gumprecht Patent No. 1,268,565. Strong springs have been found necessary for restoring the silencing rolls to their normal effective positions, since the typewriter carriage may have a computing zone in which several registers are jointly actuated, and consequently several silencing rolls simultaneously raise their tappets to actuate their respective jacks and connections to the pin-bars by this spring tension; and the work of overcoming this tension of the spring has made it had to depress the tabulator-keys.

An object of this invention is to relieve the tabulator-keys of this work, and for this purpose all the work incident to the operation of inoperatively conditioning these tappets by the keys is performed automatically by a motor or source of power usually employed for automatically returning the typewriter carr1a e.

'Ighere is also provided means for locking said silencing member in ineifective position so as to clear the vibrating cam-plate, an means for restoring the mechanism to its normal position and to stop the motorv upon releasing of said tabulator-keys.

,Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a skeleton perspective view, showing the preferred form of my invention.

Figure 2 is a vertical view in rear elevation.

Figure 3 is a perspective view of the switch.

Figure 4 is a detail skeleton perspective view of a resilient lever mechanism.

Figure 5 is a cross-sectional yview illustrating the construction of the operating eccentric and pulley.

Figure 6 is a vertical view in side elevation, showing all parts in their normal positions.

Figure 7 is a detail vertical view in side elevation, showing the mechanism after depressing the tabulator-keys and previous to the locking of the silencing roll in its ineffective position.

Figure 8 is a detail vertical view in side elevation, showing the silencing roll in its eX- treme ineffective position, and being acted upon by the operating eccentric.

Figure 9 is a detail vertical view in side elevation, showing the silencing roll locked in ineii'ective position and disconnected from the operating eccentric.

Figure 10 is a detail vertical view in side elevation, showing a possible interference between a resilient arm and the eccentric mechanism.

Figure 11 is a diagram of the circuits between the double-key-actuated control of the switch-box of Figure 3 to the machine-operating motor.

The Underwood typewriting machine usuallyA is provided with a tabulating mechanism including a set of tabulator-keys 11 and levers 12 fulcrumed at 13, and at their rear ends connected to raise decimal stops 14 which co-operate with column-stop 15 on the carriage 44 urged in a letterspace direction, by a spring motor 44a connectible by a strap iov l diagram at Figure 11.

'circuit terminals 22a Av44" to the carriage. Upon each of the decimal stops 14 a shoulder 16 is formed to engage a universal bar 17 for the purpose of operating mechanism to throw a silencing roll 18 to its ineective position. This roll 18 is shown at Figure 6 in its normal or operative position where the tappet or computing zone-selector 18 is raised to position its oneway pawl 18h in operative relation, to engage and raise the jacks 18c connected to the transposition devices of the computing mechanism. The tappet 18a drops to an ineffective position rela-tive tothe jacks 18c when the roll 18 is shifted to the position of Figure 8. Universal bar 17 mounted on a rock-shaft 19 is held in normal position against the shoulder 16 by means of a spring 20. Fast on shaft 19 there is provided an arm 21 extending rearwardly and operatively connected with a switch box 22, through a tab 23 at the end of arm 21 which normally retains a circuit closer 24 in open relation with two electric and 22b by interlocking with an outwardly-extending finger 25 thereof against the pressure of a spring 26, wound on a shaft 27, to which the circuit closer and finger are attached, said spring 26 being able to close the circuit across the two terminals 22a and 22b when the arm 21 is actuated by the depressionof tabulator-key 11 to withdraw the tab 23. Upon withdrawing the tab 23, the circuit closer 24 is effective to close the motor circuit that includes connec-V tions to the two terminals 22a, 22", as more fully shown and described in the` aforesaid atent to Hart, No. 1,325,469, and also in An eccentric 28 forms an integral part of a pulley 29, securedto the carriage-returndrive-shaft 90 and actuates a pla-te 30 eccentrically, and, by its action on the latter, imparts to the plate a vibratory motion in such a manner that it will develop at its' free end 31 an elliptical path, du`e to one end 32 thereof being anchored to the frame by means of a pin-and-slot arrangement 33. `The loose end, bent to form alip 31, will therefore first swing under a tab 34, move upwardly to raise a lever 35, and finally withdraw itself fron` under said tab 34, due to the action of said eccentric 28. A washer 36 is fixed to the pulley for the purpose of guiding the eccentric plate 30. vThe lifting of the lever 35,

mounted upon a stud 37 secured to a plate 3,8, raises a link 39, upon which said plate 38 is' mounted, and, by means of apivot pin 40 on an arm 41, rocks a sha-ft 42, upon which silencing roll arms 43 are mounted, consequently throwingthe silencing roll 18 to its ineffective osition, shown at Figure 8.

Ordinari y if while thetabulator keys are normally released, the motor is operated to return t e typewriter carriage 44, or for any other purpose, the eccentric 28 will rotate and .vibrate the plate 30, butthe operation will not aiect the lever 35 because the tab 34 on` said lever 35 is held clear of the eccentric p ath of said plate 30. Upon rocking the shaft 19, a roller 45, adjustably mounted on an arm 46, will move upwardly to the position shown in dotted lines in Figure 6, and by actuating a cam-face 47 of a lever 48, mounted upon the stud 37, will throw the tab 34 on the lever 35 into the path of the lip 31 on the eccentric plate 30, as shown in Fi ure 7. The lever 35, mounted on the stud 3 is positively operated in one direction only, being thrownout of the path of the lip 31 by means of an ear 49, engaging the lever 35 under the tension of a spring 50, to fonn a.

resilient connection between the two levers leingaging withv the lip 31, as shown in Figure 10.

The shaft 19 by its key-actuated rocking movement imparts to arm 21 an upward motion, thereby allowing the spring 26 to act and close the circuit across the two terminals 22a, 22", in circuit with the motor. The motor 94, by suitable belt connection 29"1 to the pulley 29, vibrates the plate 30 eccentrically and operates the lever 35 by means of the tab 34, which engages with the lip 31 in the free end of said plate 30, and, by moving upwardly, swings the arm 41 on the shaft 42, thereby throwing the silencing roll 18 to its ineffective position of Figure 8. A link 51 is operatively connected with the arm 41 by means of the pin 67, and at its extreme lowl er end is controlled by a slot 52 'sliding on stud 53, fast on a bracket 54 mounted on the machineframe 55. Upon the link 51 there is adjustably mounted a latch 56 operatively engaging with pawl 57 and held normally in theposition shown in Figure 6.

Thedepression of a tabulator-key 11 lifts its denominational stop 14 into the path of the column-stop 15, and releases the carriage to its spring tension until arrested by the stop 15 striking the stop 14. The lifting of the stop 14 vibrates the universal bar 17, to rock the shaft 19, raise the arm 46, lift the arm 21, and vibrate the two-part lever 35 and 48 about its stud 37. This has been accomplished with every little ke -resistance, and

the two-part lever 35- 48 so that the tab 34- thereof swings into the path of lip 31. The swinging of the lip 31 1s in a direction to swing under the tab 34 to lift the lever 3548,

hence when the engagement of the lip and tab takes place, the'several parts will move from the position of Figure 7 to those of Figure 8, where the eccentric driven lip 31 has swung the roll 18 to the full-line position, raised the link 51 so that the lower slotted end will be guided towards the arm 48 by the angle of tlie slot, release the pawl 57 to its spring 58 until it has swung under the latch 56. From the Figure 8 positions, the lip 31 begins to recede, and the tab 34 follows the li downward until the restoring motion of t e roll 18 and links 39 and 51 is arrested by the latch engaging and'resting upon the end of the pawl 57, which checks further restoring movement of these parts, and the pawl assumes the burden of holding the spring-pressed roll 18 in its inoperative position. The shifting of the latch 56 b the slot 52 and the angular face of the lyatch combine, as shown at Figure 9, to establish a straight line of resistance for the springpressed link 51, that bisects the stationary pin 53; hence the engagement between the pawl and latch is effectively maintained with out any holdin spring, except the very light spring 58, whic does not materially increase the resistance of the awl to the returning swing for the roller 45. The extent of this restoring motion to effect the release of the tab 34 from the lip 31 is indicated by the dotted position of the roll 18 in Figure 9. As soon as the tab 34 has cleared the lip 31 and the latch 56 is resting upon the pawl 57, the spring 68 exerts itself to swing the lever 35-48 to the position of Figure 9, where this motion is arrested b the cam-face 47, engaging the roller 45. t this point, the key 11 has practically no resista-nce except from the spring 20, and when the key is released, the carriage will be released from the detaining stop 14 and the release of the shaft 19 to the spring 20 causes the roller 45 to swing down from Figure 9, depress the heel 59 to withdraw the awl 57 from under the latch 56, allowing tli its normal effective position. The restoring of the shaft 19 and roller 45 from the Figure 9 to the Figure position first withdraws the pawl 57 from under the latch 56, the a'ction of the angular slot 52 upon the stationary pin 53 swings the link and latch in a direction opposite .to the direction of the pawl, to provide a maximum working clearance for the latch from a minimum side swing of the pawl, and the arm 21 swings down upon the switch-arm 25 to open the motor-circuit.

Other details illustrated in the drawings are'of the type usually found in the Underwood machine and are closely related-to the mechanism which forms a part of this invention. For this reason they will beV generally described. I

In addition to the step-by-step and tabue roll 18 to be spring-restored to` Y as to ull on a link 64 against the tension of a spring 65. The link 64 is connected to a pawl 65 in such a manner and the pawl is so mounted that it will first'be drawn into engagement with the rack and through being fulcrumed at 71, by its action will automatically draw the carriage in the return direction one step. As it is desirable to throw the silencing roll 18 to its ineffective position upon operation of the back-space key, there is also provided an arm 72 fast upon said shaft 62 and by means of a pin-and-slot arrangement 69 operates the link 39 upwardly to rock the shaft 42 and silence the roll 18.

It is also desirable to silence the roll 18 upon operation of a case-shift key 82, after the manner of Gumprecht, No. 1,268,565, dated June 4, 1918, because the numeral keys should not record in the computing mechanism, and, for this purpose, there is provided a lever 83 operated by the key 82 and actuating a shift frame 74 including a rock-shaft 73 and an arm 93 fast upon it to carry a roller 76 extending rearwardl to operate on a cam 75, to throw the silencing roll 18 to its ineffective position. It `will be noted that an arm 77 with a pin 92 thereon, slips past the toe 79 on stop 80, so that the arm 77 and the cam will move as a unit without tensioning the spring 81.

Under ordinary conditions, when shaft 42 bearing the silencing roll 18y is rocked in any other way than by the case shift frame, the roller 76, carried by this frame, will lie in the path of a hump 91 on the loose arm 77, so as to hold it out of the path of stop 80, thereby. allowing toe 79 to get in the path of pin 92 on arm 77 so that, when the rock-shaft 42 swings to throw the silencing' roll 18 to its ineffective position, it will have to tension the spring 81, the latter being used to restore said silencing roll to normal o r e'ective position.

The usual Underwood power-driven carriage-return mechanism shown and disclosed in the patent to Frederick A. Hart, No. 1,281,362, dated October 15, 1918, includes a carriage-return key at the keyboard that operates to push the slide-bar 84, Figure 3, rearwardly, to operate a switch 86, to close an electric circuit 96, through a motor 94, to drive a pulley 95, having a belt connection 29to the pulley 29. Said key simultaneously vibrates an arm 88'* to shift a pinion'88, engaging a carriage-rack 44,A into clutching engagement with a rotary clutch-member 89 upon a shaft 90 that is driven by the pulley 29.

In the present construction as shown at VFigure 3, the key-actuated slide-bar 84, in

moving rearwardly, performs a double function. The rearward movement of the bar first releases the spring-pressed switch-arm 86, mounted upon one terminal 22a, to close the circuit to the other terminal 22 through contacts 86a, to start the motor, drive the belt and is eective to lock said tab between said end 85 and arm Q5, to prevent the actuation of a tabulator-key during the interval the carriage-return key Vis held depressed.

. It will be noted that the present invention includes a power-driven pulley that is conditioned at one time to efect a key-controlled return movement of the carriage, and at another time said pulley is conditioned to vibrate the spring-actuated silencing means to render the tappets 18a inoperative during the interval the tabulator-key is depressed; that the actuation of the carriage-return mechanism provides an obstructive interlock to the tabulator-mechanism by preventing` the actuation of a tabulator-key during the interval the carriage-return key is depressed; that the upward swing of the key-actuated tab 23 to release the switch-arm 25 to start the motor,

swings yto the rear of the exposed end 85 of the slide-bar 84 and prevents the actuation of the carriage-return key during the interval the tabulator-key is depressed; and that the circuit through the motor to drive the pulley 29 is closed by two independently-operable circuit-closers, one circuit-closer controlled by the tabulator-keys, and the other circuitcloser controlled by the carriage-return key, and both circuit-closers co-operative with the same normally open circuit-terminals to the motor.

It will also be noted that while the mechanism shown and described includes a keyactuated switch-control to automatically start and stop -the motor, the motor may be conditioned to rotate the pulley 29 continuously, and the two key-actuated mechanisms connectible to the pulley would be equallyv effective to perform their separate functions.

The carriage-return mechanism may include the roll-releasing mechanism of Gumprecht, operative to rock the shaft 7 3 and roll 18, but as this is accomplished independently of the rock-shaft 19, a detailed descrip.- tion is not believed to be necessary. The only part of this mechanism that cooperates with the tabulating mechanism is the bar 84.

Variations may be resorted to within the scope 'of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. The combination ofa carriage, a tabulating mechanism therefor, a motor, a computing-zone controller, means to set the zonecontroller to a computive position, an eccentric driven by the motor, an actuator reciprocated by the eccentric at every revolution of the motor, and a tabulator controlled connection between zone-controller and actuator to enable the latter to move the zone-controller to ineffective position.

2. The combination of a carriage, a tabulating mechanism therefor, a motor, a computing-zone controller, means to set the zonecontroller to a computive position, an eccentric driven by the motor, an actuator reciprocated by the eccentric at every revolution of the motor, a tabulator controlled -connection between zone-controller and actuator to enable the latter to move the zone-controller to ineffective position, means controlled by any tabulator-key eifective to control said motor and drive said actuator, and means automatically effective to detain said setting member in its inoperative position. l

3. The combination of a power-driven carriage, a computing mechanism including a zone-controller normally in effective position, a tabulator-mechanism for said carriage, and means controlled by said tabulator-mechanism to move said zone-controller to ineffective position; said moving means including a motor controlled by the tabulator-mechanism, and including both a driver which is revolved by said motor during a run of the carriage and a vibrator connected to be vibrated repeatedly by said rotary driver at each run of the carriage, and also including both an interponent connected to said zone-controller and normally out of the path of said vibrator and means operated by said tabulator-mechanism to set said interponent into the path of said vibrator, to enable the vibrator to move said zone-controller to ineffective position.

4. The combination of a power-driven carriage, a computing mechanism including a zone-controller normally in effective position, a tabulator-mechanism for said carrlage, and means controlled by said tabulator-mechanism to move said zone-controller to ineffective position; said moving means including a motor controlled by the tabulator-mechanism, and including both a driver which is revolved by said motor during a run of the "carriage and a vibrator connected to be vibrated repeatedly by said rotary 'driver at each run of the carriage, and also including both an interponent connected tosaid zonecontroller and normally out of the path of said vibrator and means-operated by said tabulator-mechanism to set said interponent into the path of said vibrator, to enable the vibrator to move said zone-controller to in.

effective position, means for locking. said zone-controller in ineffective position, and means for enabling the tabulator-mechanism to release said locking means.

5. The combination of a power-driven carriage, a computing mechanism including a zone-controller normally in eective position,

a tabulator-mechanism for said carriage, a. motor controlled by the tabulator-mechanism, a driver which is revolved by said motor dur ing a run of. the carriage, and a vibrator connectedl to be vibrated repeatedly by said rotary driver at each run of the carriage, a train extending from'said tabulator-meohanism to said zone-controller and including an arm movable by said tabulator-mechanism and an interp'onent yieldingly movable by said arm into the path of said vibrator, said interponent and said arm being mounted upon a.

^ member of said train to move the same, and

` actuated by means to enable said train to move said zonecontroller to inellective position.

6. Ina combined typewriting and computingr machine, the combination of a typewriting and computing carriage, a zone-controller normally in effect-ive position, a tabulator fork said carriage, a motor controlled by said tabulator, means operated by said motor to move said zone-controller to ineffective position, a carriage-return key-controlled train including a clutch connectible to said motor, said clutch normally open, and means to enable said tabulator to prevent said clutch from connecting said motor to said carriagereturning train.

7. The combination of a carriage, a tabulating mechanism therefor, a computing-zone controller normally operative, a tabulator- 'controlled motor, a. drive-shaft revolved by said motor, movement-transmitting mean's operable by said drive-shaft and including a member ,positively vibrated by said driveshaft repeatedly, and means connectible b the tabulating mechanism to co-operate with a vibratory member to render the zone-controller inoperative for the run ofthe carriage.

8. The combination of a carriage, a tabulating mechanism therefor, a computing-zone controller normally operative, a tabulatorcontrolled motor, a drive-shaft revolved by said motor, a vibratory member positively said drive-shaft repeatedly, means connectible by the tabulating mechanism to co-operate with the vibratory member to render the zone-controller inoperative for the run of the carriage, means to detain the zone-controller in its inoperative position during the interval of tabulating the carriage, and means effective to automatically release the zone-controller at any carriagestop positlon determined by the tabulating mechanism.

ADOLPH G. KUPETZ. 

